@Test
 @LocalData
 public void testDescriptorAuthenticate() throws Exception {
   AuthenticateDescriptorImpl d = new AuthenticateDescriptorImpl();
   assertTrue(d.authenticate(new SpecificUsersAuthorizationStrategy("test1", false), "test1"));
   assertFalse(d.authenticate(new SpecificUsersAuthorizationStrategy("test1", false), "test2"));
   assertFalse(d.authenticate(new SpecificUsersAuthorizationStrategy("test1", false), ""));
   assertFalse(d.authenticate(new SpecificUsersAuthorizationStrategy("", false), "test2"));
   assertFalse(d.authenticate(new SpecificUsersAuthorizationStrategy("test1", false), null));
   assertFalse(d.authenticate(new SpecificUsersAuthorizationStrategy(null, false), "test2"));
 }